Question

I want to define a cookie value as class variable in constructor method to make all methods are available to use the Cookie.

but I got an error message like,

Object reference not set to an instance of an object.

 public class OrdersController : Controller
{   
    string userData;

    public orderConroller(){
       string cookieName = FormsAuthentication.FormsCookieName;
           HttpCookie authCookie = Request.Cookies[cookieName];
       FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
           userData = authTicket.UserData;
    }

    public void a(){
      //I need Cookie
    }
    public void b(){
      //I need Cookie
    }
    public void c(){
      //I need Cookie
    }
    public void d(){
      //I need Cookie
    }
}

How can I solve this problem? @.@

Thank you!

Answer 1

You cannot use the HttpContext (in your case you are attempting to access the Request object) inside a controller constructor because it is not yet initialized. The earliest method in which you could access it is the Initialize method that you could override.

So:

public class OrdersController : Controller
{   
    private string userData;

    protected override void Initialize(RequestContext requestContext) 
    {
        base.Initialize(requestContext);
        var request = requestContext.HttpContext.Request;
        string cookieName = FormsAuthentication.FormsCookieName;
        HttpCookie authCookie = request.Cookies[cookieName];
        FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
        userData = authTicket.UserData;
    }

    public void a() {
      //I need Cookie
    }
    public void b() {
      //I need Cookie
    }
    public void c() {
      //I need Cookie
    }
    public void d() {
      //I need Cookie
    }
}